The Most Outrageous U.S. Conspiracy Theories

Humming from the Sky

Some people have tried to say that airplanes are the cause of humming. That theory has not been proven. Others think that it's something extraterrestrial or secret government training. The government has not commented on what the sound was.

The More You Know

Mount Everest is bigger now than the last time it was measured.
J is the only letter that doesn’t appear on the periodic table.
The Canary Islands are named after dogs, not birds.
If you take all the letters from the word "wizard" and swap them with opposite letters (a->z, b->y), it spells wizard backwards.

Post originally appeared on Upbeat News.